An airborne particle-measuring device quantifies and qualifies contaminants of an air environment in clean-rooms, open spaces, and enclosed spaces such as homes, offices, industrial environments, airplanes in flight, cars and others. The device may include a sensor system, an electronics system, communications and information storage. The sensor system may include a high-power low-wavelength single-frequency continuous laser, an open-cavity high-efficiency mirror having an optical surface tuned to the laser frequency and a flow system that includes a vacuum pump to sample the air. The electronics system may be mounted on a single multilayer PC board with a microprocessor, firmware, electronics and a touch-screen LCD display. Innovations in light source, flow control, analog and digital signal processing, components integration and software allow provision of equipment in a wide range of high-complexity settings that require precise particle measurements.

A defect inspection apparatus including illumination optical system configured to irradiate a sample with an illumination spot; a detector arrangement configured to detect, from a plurality of directions, reflected light from the sample; a scanning controller configured to control a scan of the sample with the illumination spot by overlapping detection regions such that the detection regions partially overlap; and a signal processor configured to process a signal obtained by detecting the reflected light from the sample by the detection unit to detect a defect. The signal processor is configured to synthesize an integrated signal by processing the signal detected a plurality of times by overlapping the reflected light of the sample for each detection region by the detection unit; and to detect the defect on a surface of the sample based on the synthesized integrated signal.

Analyte testing devices, assemblies, methods, operations, and systems are shown and described. In a lateral flow reader to generate a test result from an assay when contacted with a sample and having a camera multiplexer circuit and a host controller. An assembly includes an interface connector; a self-contained optics module having a microcontroller in electrical communication with the interface connector and a host controller. Typically, an optical imaging device being in communication with an interface connector but independent of a microcontroller.